Edmund keith



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i A EDMUND KEITH, on.r BUFFALO, 'New YoRmAssIeNoe Y'ro nIMsnLr, BELA-H'. ooLE- GROVlhAND CHAUNGEY B. HUTCHINS, OF SAME PLACE.

, Letters Patent- No. 94,892

, dated September 14, 1869.

y ,0 i 'IMIRQVEMfzNT 1N WATER-METERS ADAPTED r'oR ROTARY PUMPS.

The Schedule referred to iulthese Letters Patent and' making part of thesame.

i To all whom lit mayoncern Be it known thatii, EDMUND KEITH, of thecity of4 ment, with one-half the caseremoved, to showthe interior. p i

Figure 2 is a section in planea x`of fiv. 1. Figure 3 is a perspectiveview of' one-half the case y and one of the revolving wings forpaddles.l

Like letters of reference indicatecorresponding parts inall the ligureS.

improvement belongs to that class where wings or paddles, situated in acase, lturn broadwise when just 'forward ot'A the induetionnlet, butturn tlatwise when just past the eduction-outlet, to" allowthem' to`pass the butinent- `that arrests the revolution of water.

My invention consists in imparting to the wings or paddles `a vconstantforward revolution, by means i hele-titer` described, in'steadzof` analternate `vibrating movement, back andv forth, duced in pumps of thiskind.

1n the drawingr- A indicates a case, made `of halves, suitably boltedtogether, and provided with induction and yeductionpipes b c. p

One-half of vthis case has formed on the inside, between the pipes, anextended llat bntment, d, as clearly shown,` and also around the centre,two concentric such as is usually procam-waysf f', opposite each other,occupying respectively the segment of circles, the one being of largerdiameter than the other.

` Oloselyinside the case fits acylindrical piston-head, B, with shaft g,bywhi'oltit is operated.

This head has a central hub, h, and a concentric` flange/5, which standsoutside the cani-ways ff', thus enclosing them closely, and leaving anopenannular space, k, between the hub andilange.

W'ingsor paddles C (l, tilling the cross-area of` the space ofthe case,are connected with the piston-head, so as to turn freelyon their axes. i

To secure this result properly, the axis 1 of" each, passes. throughilange t and enters hub h, as clearly shown in fig. 2. A

This axis has two cross-arms, m m', resting in annular space k, andcoincidingiin position respectively with cam-ways f f', which theystrike in their passage.

I t will belseen that the butment is of such an extent thatsone wingdoes not leave it until the next comes on, so that the open space overthe top of the butment, through which the wings pass flatwise, is keptclosed at all times against the unnecessary escape of water. v

, Before one wing leaves, the next strikes on, and

the only escape of water is' the small space intervening between thewings.

The wings in section are wedge-shaped, by which they tit more accurately between the butment and case ,in passing iiatwise.

The operation will be readily understood.. As the piston-head is turned,the cross-arm m,

.striking the corresponding'way f, causes the wing to turn broadwiseacross the area of the ease, just past the induction-pipe b,fin whichposition it remains till" `therevolution carries it just pasttheednction-fpipe,

lwhen armmV frees from Way F, and the other arm,

m', then strikes corresponding way f', and the/wing or paddleconsequently turns forward a quarter revotion i'latwise, in position topass over dat butment ll.

The axial revolution of the wings is constantly for-V ward, and neverbackward.

Itnnatters not, however, which way the piston is turned, as the actionisth'e same either way.

I am aware that in rotary pumps there are cases in which the wings t-urntothe right-angled position, to accomplish the saine general object as'above indicated, but in such cases, so far as I am aware, the' Wings donot have a constantly forward revolving n1otion on their axes,but-rather an alternately vibrating forward-and-back action, lirstturning up to close-the passage, and then turning down to open it'. Suchis `the case in patent No. 56,627, of 1866. l

The great diilicnlty in such cases is, thatpif the wings get cloggedwith sediment or other matter, in breweries, for example, they cannoigbyhaving only a partial movement, free themselves, but hold theclogging-matter and carry it around andaronnd. i Another diflieulty is,that in changing position the back motion acts against thc current,andselves to check it, whereby there is loss of power, aswell as eiiect.f 1

lhe particular arrangement of. the cross-,arms m m vand cam-ways f f areeli'ective in producing this result, and asV these parts are very simple`in their construction, and are not liable todisarrangement,.and

being perfectly enclosed by the piston, they cannot become obstructed.

This invention' is e ual-llr a licable'to )um )s Wa- D l l i What Iclaim as my invention, and desire to secure by Letters Patent, is-

The nrrmigement with the case A and pafddlesC, of the enclosingpiston-head B, with the ange i, enclosing fthe operating-parts,consisting of the eamvwnys ff :md cross-arms m m', the whole operatingin the mamner z und for the purpose specified.

Also, the combination, with the case A and paddles C, of the Hetextended butment d, on one side of the case, and serving the doublepurpose of aiv stop to the water and a guide to the paddles, asdescribed.

In witness whereof, I have hereunto signed my naine, in the presence oftwo subscribing witnesses.

E. KEITH. Witnesses ALBERT HAIGHT. J. R. BRAKE.

